I'm in shock - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Suicide-D · 12-09-2003, 03:51 PM

I can't beleive the gas mileage my 70 is getting. I am not used to getting more than 10 miles to the gallon. This thing has to be getting 20. I would get a mileage figure but my tires aren't the right size. I miss the power of my v-8's and the luxury of A/C in my 92, but this I-6 is rapidly earning a place in my heart, and my wallet!

*rage'nrat638* · 12-09-2003, 04:29 PM

TURBO CHARGE IT...W/100 SHOT OF NOS ....YOU WILL HAVE LOT-O-POWER

lukecp · 12-09-2003, 04:32 PM

You could always calculate the mileage over a known distance....the odometer on my '72 dosent' work that great so that is what i do when i take a trip

Suicide-D · 12-09-2003, 04:53 PM

yeah, now that I'm thinking it's getting such good mileage I'll do the math for a tank and see what she gets. my tires are 10.88% smaller than stock. my 71 gets a whopping 7 miles to the gallon on super.

I need more NAWS... I probably would blow it up

Suicide-D · 12-09-2003, 04:57 PM

do they make a fogger plate that would go under a Monojet???

jmanz69 · 12-09-2003, 09:02 PM

Make your own, it wouldn't be that hard. Some flat aluminum stock, a couple short brass tubes, and some fittings soldered on them. Would make a cool project.

dinnut · 12-09-2003, 09:09 PM

how do you figure outhow much bigger or smaller your tires are than stock. im running a 255/60 on my 70 and wondering how wrong my speedo is

lukecp · 12-09-2003, 09:18 PM

Well, you would need to compare the circumference of the tires....255/60's are 27" tall, so the circumference is 84.78". Divide that by the diameter of the stock tire size, and you will the the percentage error. (in case you don't know circumfirence is 3.14 x diameter).

Suicide-D · 12-12-2003, 11:05 AM

I guess I know why my truck was getting such good mileage.... it wasn't getting any fuel. My filter clogged up yesterday, my tank is very rusty. On the up side my truck is running much better. I have more power and it runs more like I thought it should. I'm not lagging behind in traffic anymore.

I'm checking the mileage now I'll post the results after this tank is finished.

*Gee_Emm* · 12-12-2003, 11:17 AM

good to hear, I am keeping the 6 in my Jimmy because I wanted something different and since it will be a daily driver I wanted some better gas mileage.

dubie · 12-12-2003, 11:52 AM

I was getting 17-19 mpg with my inline before I decided to swap it out for the small block. They are great little engines!! Some days I wish I would have kept mine

**old Rusty C10** · 12-12-2003, 12:18 PM

with two newer trucks a 76 and an 86 neither have smog stuff i aint getting anywhere near that kind of mileage i figure im lucky to get ten mpg

PR454SS · 12-12-2003, 02:02 PM

Quote:

Originally posted by Suicide-D
do they make a fogger plate that would go under a Monojet???

THAT'S FUNNY!:p
I thought I was the only one with issues like those, there has got to be some kind of support group for what we've got!

*racedvl* · 12-12-2003, 09:06 PM

Tire size . . . . . . .
http://www.miata.net/garage/tirecalc.html

To find your rpm's. . . . .
http://www.angelfire.com/fl/procrastination/rear.html

to help fix speedo. . . .
http://members.core.com/~faldrich/speedo.htm

da-burb · 12-13-2003, 12:46 AM

This site is real good at tire sizes, gear ratios and the like. http://www.ring-pinion.com/

12-09-2003, 03:51 PM	#1
Suicide-D Registered User Join Date: Jan 2001 Location: Katy, TX...but the love of my life resides in Dublin,OH. Posts: 1,408	I'm in shock I can't beleive the gas mileage my 70 is getting. I am not used to getting more than 10 miles to the gallon. This thing has to be getting 20. I would get a mileage figure but my tires aren't the right size. I miss the power of my v-8's and the luxury of A/C in my 92, but this I-6 is rapidly earning a place in my heart, and my wallet!

12-09-2003, 04:32 PM	#3
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	You could always calculate the mileage over a known distance....the odometer on my '72 dosent' work that great so that is what i do when i take a trip __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

12-09-2003, 09:09 PM	#7
dinnut Registered User Join Date: Apr 2003 Location: missouri city, tx Posts: 4,486	how do you figure outhow much bigger or smaller your tires are than stock. im running a 255/60 on my 70 and wondering how wrong my speedo is __________________ 70 longbed 496/th400/Ford 9"

12-09-2003, 09:18 PM	#8
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	Well, you would need to compare the circumference of the tires....255/60's are 27" tall, so the circumference is 84.78". Divide that by the diameter of the stock tire size, and you will the the percentage error. (in case you don't know circumfirence is 3.14 x diameter). __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

12-12-2003, 11:52 AM	#11
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,855	I was getting 17-19 mpg with my inline before I decided to swap it out for the small block. They are great little engines!! Some days I wish I would have kept mine __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

12-09-2003, 04:29 PM	#2
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	TURBO CHARGE IT...W/100 SHOT OF NOS ....YOU WILL HAVE LOT-O-POWER

12-09-2003, 04:53 PM	#4
Suicide-D Registered User Join Date: Jan 2001 Location: Katy, TX...but the love of my life resides in Dublin,OH. Posts: 1,408	yeah, now that I'm thinking it's getting such good mileage I'll do the math for a tank and see what she gets. my tires are 10.88% smaller than stock. my 71 gets a whopping 7 miles to the gallon on super. I need more NAWS... I probably would blow it up

12-09-2003, 04:57 PM	#5
Suicide-D Registered User Join Date: Jan 2001 Location: Katy, TX...but the love of my life resides in Dublin,OH. Posts: 1,408	do they make a fogger plate that would go under a Monojet???

12-09-2003, 09:02 PM	#6
jmanz69 Careful, they attack... Join Date: Aug 2001 Location: Waterford, MI, USA Posts: 1,107	Make your own, it wouldn't be that hard. Some flat aluminum stock, a couple short brass tubes, and some fittings soldered on them. Would make a cool project.

12-12-2003, 11:05 AM	#9
Suicide-D Registered User Join Date: Jan 2001 Location: Katy, TX...but the love of my life resides in Dublin,OH. Posts: 1,408	I guess I know why my truck was getting such good mileage.... it wasn't getting any fuel. My filter clogged up yesterday, my tank is very rusty. On the up side my truck is running much better. I have more power and it runs more like I thought it should. I'm not lagging behind in traffic anymore. I'm checking the mileage now I'll post the results after this tank is finished.

12-12-2003, 11:17 AM	#10
Gee_Emm Account Suspended Join Date: Sep 2000 Posts: 4,002	good to hear, I am keeping the 6 in my Jimmy because I wanted something different and since it will be a daily driver I wanted some better gas mileage.

12-12-2003, 12:18 PM	#12
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,303	with two newer trucks a 76 and an 86 neither have smog stuff i aint getting anywhere near that kind of mileage i figure im lucky to get ten mpg __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

12-12-2003, 09:06 PM	#14
racedvl Account Suspended Join Date: Jan 2000 Location: Woodstock, IL Posts: 7,020	Tire size . . . . . . . http://www.miata.net/garage/tirecalc.html To find your rpm's. . . . . http://www.angelfire.com/fl/procrastination/rear.html to help fix speedo. . . . http://members.core.com/~faldrich/speedo.htm

12-13-2003, 12:46 AM	#15
da-burb "Ochre Ogre" Join Date: Apr 2000 Location: Springfield, MN Posts: 3,558	This site is real good at tire sizes, gear ratios and the like. http://www.ring-pinion.com/ __________________ Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087

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